Mining-machine



(No Model.) 2 Sheets-Sheet 1.

H. J.v RICHARDS.l

MINING MACHINE.

No' 342'635" Patented May 25, 1886.

1f-gygy le \l I 4 mwlwmmum (No Model.) 2 sheets-snee: 2.

H. J. RICHARDS.

MINING MACHINE. No. 342,635. Patented May 25, 1886,.

UNITED STATES NEEN-f ENCE@ HENRY J. RICHARDS, OF VILKES-BARR,PENNSYLVANIA.

MINING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 342,635, dated May 25,1886.

Serial No. 194,712. (No model.)

To all whom it may concern/ Be it known that I, HENRY J. RroHARDs, aycitizen ofthe United States, residing at Wilkes- Barr, in the countyof-Luzerne and State of Pennsylvania, have invented certain new anduseful Improvements in Coal-Drills, ofwhich thefollowing is aspecification, reference being had therein to the accompanying drawings.

This invention relates to certain improvements in miners drills, and isespecially designed for drilling coal.

It has for its objects to provide a cheap, compact, and durable device,the parts of which may be interchangeable and of such weight as to beeasily carried and manipulated in the various positions required withoutunnecessary fatigue or, undue exertion by a person of ordinary strength.

The invention also has for its objects to so construct the parts of thedevice that they may be used individually in connection with certainparts ofthe drills now in use or together as a whole. This enablescertain parts of the u device to be applied to theL existent minerstools by slightly altering the same, enabling the miner to secure aneffective and virtually a new tool at small expense.

The invention still further has for its objects to so construct theparts that they will not be vliable to injury from the flying coal whenthe blast takes place, ths enabling the miner to leave the parts in theimmediate neighborhood of the blast, instead of taking the said parts toa place of safety, and thus avoid the trouble, labor, and loss of timeconsequent thereupon.

The above-mentioned objects I accomplish by the means illustrated linthe accompanying drawings, in which- Figure 1 represents a longitudinalsectional view of my device complete; Figs. 2 and 3,.de tached Views ofthe fastener forming part of the device; Fig. 4, a sectional view ofamodification of my improved drill; Fig. 5, a detached view of a drillextension to be used in connection with the device; Fig. 6, detachedviews of the levers for locking and unlocking the parts of the device;Fig. 7, a side elevation showing a modification of my invention with anextension-bar and connections for drilling at angles, and Fig. 8 a planview of the extension-bar detached.

The letter A indicates a fastener, which is in the shape of a hollowfrustum of a cone, having a series of screw-threads upon a portion ofits periphery, as indicated by the letter B. The said fastener is alsoformed with a series of longitudinal grooves, C, extending throughoutthe threaded portions, forming knife or cutting edges D on therespective threads similar to those of ascrew-tap, so that t-he fastenermay be quickly and easily worked into the coal, threading the same andworking into the thread so as to be securely held.

Throughthe walls of the device are formed apertures D', which permit thedust cleared by the cutting of the coal to drop through aud escape andnot choke or pack the threads,l which-would prevent the fastener fromsecurely taking hold in its seat. The larger end of the fastener isprovided with radial slots F, which connect with the segmental slots G,being provided with recesses H for the purpose of locking the parts, inconnection with the internally-screw-threaded sleeve I, and suitablelocking devices or lugs, K, on the outside of the same. Through the saidsleeve extends ascrew, L, to which the detachable drill-holder v M maybe secured. The opposite ends of said screw are squared, and thedrillholder is socketed for the reception of the screw, which is heldinplace by means ofatransverse screwbolt, N. The drill-holder is alsosocketed for the reception of the shank of the drill, which is held by asimilar transverse screw-bolt.

The letter I indicates a locking-lever provided with radial lugs R,adapted to be secured in the locking-recesses of the fastener, so thatthe saine may be conveniently turned to secure the threaded cutter inthe opening in the coal. The letter S indicates an extensible handle,which may be secured to the end of the screw opposite to that carryingthe drill, by which the drill may be forced to its work.

In order to provide for the. more effective working under certaincircumstances aspiral extension, T, may be provided for the screw, whichmay be attached to one end, so as to lengthen it, in order to permit thedrill to be worked conveniently at various angles.

In the modification shown in Fig. 4 of the drawings the fastener istransversely bored through the larger portion, and on one side, oppositesaid bore, is provided with a boss havingllocking-recesses preciselysimilar to those on the end of the fastener before mentioned.

In the modification shown in Figs. 7 and 8 the letter U indicates ahorizontal extensionbar having locking-lugs at one end similar to thoseon the threaded sleeve before mentioned, which are adapted to be lockedinto the locking-recesses in the fastener. 'lhe said bar at the oppositeend is socketed for the reception of one end of the verticalextension-bar V, which is secured thereto by means of a screw, W. Thesaid bar is provided with a head, A', which is provided Withlocking-recesses B', in which the lugs on the threaded sleeve I,surrounding the screw L, are adapted to lock. The screw in this instancehas an elongated spiral drill, as shown.

The operation of my invention will be readily understood from the abovedescription,and is as follows: The lock-lever isinserted in thelocking-recesses in the fastener, and the fastener is turned so as tocut into the coal, forming the threads therein and securing itselffrmly. The apertures through the walls of' the fastener permit the cutparticles of the coalremoved to escape, thus preventing their packing inthe threaded portion which would interfere with the proper attachment ofthe fastener. Then the fastener is proper1)T secured, the lock -lever iswithdrawn and the screw-threaded sleeve, with the drillscrew, is lockedinto the fastener, and the device is ready for work. Upon turning thescrew in the proper direction, the drill is worked into the coal,rapidly drilling into the same. When driven to its limit, it may befurther driven by reversing the screw, shifting the drill-point, andreturning the screw and its sleeve to the fastener and commencing workagain.

In the modification shown in Figs. 7 and 8 the horizontal extensionbaris lockedin the fastener and the vertical extension-rod secured to thebar, as shown in Fig. 7. The threaded sleeve is then locked in the headat the upper end of said extension-bar, when the device is ready forwork in various angular positions,in

I 'i l' this case drilling outside ofthe opening formed by the fastener.

It will be evident from the above that the device is durable and simplein construction, efficient in operation,and so compact and light as tobe easily handled and placed in position. It can also be made so cheaplyas to bring it within the reach of many miners who cannot afford to buythe expensive machines in ordinary use.

Having-thus described my invention, what I claim,and desire to secure byLetters Patent, 1s-

1. The fastener for coal-drills, threaded and provided with cutters onthe outside, and having apertures leading from the threaded portion tothe interior to permit the coal-dust to escape and prevent its packingin the threads, as specified.

2. The combination, with the fastener constructed as described, andprovided with radial and segmental slots at one end of the threadedsleeve, provided with lugs constructed to lock in the segmentalslots,andthe drillscrew constructed to work in the sleeve to operate thedrill-tool, substantially as specified.

3. A fastener for coaldrills,provided at its rear end with radial andsegmental slots for the reception ofa lockingsleeve, and having at oneside a boss having similar slots,the slots being for the reception of adetachable screwthreaded sleeve provided with lugs for the purpose, thesaid sleevecarrying the drilltool, the whole being arranged in suchmanner as to permit the drill to be worked longitudinally or at rightangles to the fastener, substantially as specified.

4.. The combination, with the fastener, the drill-screw, andlocking-sleeve, constructed as described, of the horizontalextension-bar,the vertical extension-bar, and their connections, thevertical extension-bar being provided with a head having slots similarto thoseof thefastener, so that the locking-sleeve may be fastened ineither at will, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

his HENRY J. X RICHARDS.

mark. Vitnesses:

GHAs. D. DAVIS, NV. D. ALEXANDER.

ICO

